Patent · US Active

Corrosion resistant coating based on silicon, carbon, hydrogen and nitrogen

US7758963B2 · kind B2 · utility

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1References

20Claims

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Assignee

H.E.F. · FR

Inventors

Philippe Maurin-Perrier · Saint-Marcellin-en-Forez, FR
Christophe Heau · Orange, FR
Yves Gachon · Firminy, FR

Key dates

Filing date	Sep 28, 2006
Grant date	Jul 20, 2010
Priority date	—
Expiry date	Nov 26, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A coating includes a thin film which is intended to protect a corrodible part against corrosion and, to some extent, against wear and friction. The coating essentially includes a composition containing silicon, carbon, hydrogen and nitrogen such that: the atomic hydrogen concentration, measured using the ERDA technique, is 20 ±5 atoms %; the atomic silicon concentration, measured using the Rutherford backscattering (RBS) technique, is between 15 and 28 atoms %; the ratio of the atomic concentrations of nitrogen and carbon (N/C) is greater than 0.9; and the hardness of the material is less than or equal to 2100 daN/mm2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.